It does not exist.

I did too with the joplin sync server until, without a failure or any error messages, it ate all my notes.

Having admined an instance with about 200 users, and migrated over to xmpp, I’m never going back.

It is such a beast in comparison to xmpp, and maintance is so much easier, as are full backups.

https://zfs.rent/

I use posteo.

If you’re thinking of using your own domain, I would suggest using forwardemail.net

They weren’t.

Google runs it’s own scans against domains.

Yes.

I made the mistake of naming my emby instance https://emby.example.com/

On emby, if you don’t have a session cookie, it opens on an authentication page.

I’ve had Google label it as a mitm attack and get labeled malware three times. It gets fixed in a day or two upon review, but all major browsers block it during that time.